Blindstitch sewing-machine.



L. ONDERDONK. BLINDSTITGH SEWING MACHINE. APPLICATION TILED DEC. 6, 1907 -19; nmm 66 W m I Patented Jan. 26, 1915.

3 SHEETS-SHEET 1.

L. ONDERDONK. BLINDSTITGH SEWING MACHINE. APPLICATION FILED DEC. 6. 1907.

1,126,265, Patented Jan. 26, 1915.

3 SHEETS-SHEET 2 19i b1 ewes as v r w JW/ JMM L. ONDEEDONK. BLINDSTITGH SEWING MACHINE. APPLICATION FILED DEC. 6, 1907.

1,126,265, Patented Jan.26,1915.

3 BHEBTSSHEET 3.

NITED STATES arr rare.

LANSING ONDERDONK, OF YORK, N. Y., ASSIG-NOR T0 UNIONSPECIAL MACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

BLINDSTITCH SEWING-MACHINE.

Specification of Letters Eatent.

Patented Jan. 26, 1915.

Application filed December 8, 1907. Serial No. 405,358.

To all whom it may concern:

Be it known that I, LANSING ONDERDONK, a citizen of the United States, residing at New York city, in the county of New York,

State of New York, have invented certain chines, and has for its object to provide means for guiding the fabric so that the same will be properly located relative to the stitching mechanism.

A further object of my invention is toprovide a stitch finger over which the stitches may be formed.

Still further objects of my invention will in part be obvious, and will in part be more fully hereinafter set forth.

In the drawings which show by way of illustration, one embodiment of my inven tion, Figure 1 is a front elevation of the front' of the sewing machine, embodying my invention. Fig. 2 is a top-plan view in detail of the stitch finger and the stitch forming mechanism, also showmg certain parts in section. Fig. 3 is a perspective view of the bracket for supporting the stitch finger. Fig. 4: is a side elevation with parts broken away. Fig. 5 is a detail showing a portion of the machine frame and the shifting handle in side elevation.

The work supporting arm 1, carries at its forward end, a crimping member 2, over which the fabric is bent, as it is presented to the stitch forming mechanism. The needle 3 which is preferably a curved needle, is secured to a needle lever 4, which is pivoted at 5 to the head of the machine. Said needle lever receives its oscillation from a link 6,'which in turn is connected to suit: able operating mechanism.

The thread. carrying looper 7 is mounted in an inclined bearing 8, secured to the front end ofthe machine. The said thread carrying looper operates at one side of the line of seam and carries its loop through the needle thread loop. The thread guide. 8, cooperates with the looper in setting the stitch. The spreader 9 mounted in suitable bearings at the rear of the machine engages the looper thread, and carries the same across the line of scam into the path of the needle.

The presser members 10 and 11 operate to hold the fabric upon the crimping ridge 2. The presser member 11 is provided with a guiding groove for the needle 3. The stitch finger 12, see Fig. 2, is secured to a short shaft 13 by means of a slot 14 and a screw The shaft 13 is mounted in a bracket 16 which is provided at its lower end with spaced ears 17 and 18.

The bracket 16 is secured to the lug or bearing 8, which in turn is secured to the overhanging arm of the machine. Said bracket may however, be secured to the overhanging arm in any other way.- A spring 19 encircles the shaft 13 and has one end secured to the bracket-16, while its other end is secured to a collar 20, fixed on said shaft 13. Said spring 19 normally tends to rotate the shaft 13, so as to bring the stitch finger firmly, but yieldingly, into contact with the fabric being stitched.

The stitch finger 12, is provided at its forward end with a tapered point over which the stitches are formed, and as the fabric is fed through the machine, the stitches are fed off from said point. The stitch finger 12 is provided with a thread guide 21, in the rear of its point, which operates to hold the fabric down upon the work support, so that the needle will properly enter the same, and when covermg an edge, the covering stitches will be properly laid. Said thread guide also engages the looper thread as it is drawn across the line of scam. I

In order to guide an edge of fabric so that the same may be properly overseamed, I have provided an edge guide 22, which is as shown in Fig. 1, secured to the under side of the shaft 13. Said edge guide is provided with a downwardly and laterally extending lip forming a recess for the reception of the edge to be stitched.

The operation of my device is as follows: The fabric is inserted in the machine with the edge thereof located in the edge guide rocation will enter the needle loop. By

mounting my stitch finger on a bracket supported from the overhanging arm, I am enabled to pass material underneath the stitch finger of any width. The stitch finger will readily yield to varying thicknesses of fabric, so that the stitches may be properly located in the fabric. By adjustin I the stitch finger laterally, the same may e. located so as to properly support the stitches relative to an edge being overstitched. As a means for lowering the work support 1 so that the material may be inserted on the crimping member 2, I have provided a pivotal support 24 for said work support and devices for holding said work support in its raised position. The pivotal-support 24 i passes through an opening in the upper side of the cylindrical work support and engages bearings formed in the standard of the ma; chine. Projecting from the lower side of the work support, is an arm 25 to which are secured perforated ears 26 by means of a nut 27.. A link 28 is pivoted at one end to the ears 26 and at its otherend is pivoted to a link 29 which in turn is'pivoted to a bar secured to the standard by a suitable lock and bolt shown in dotted lines in Fig. 5. The pivot bolt for the link 29 extends through the supporting bearings and a handle 30 secured to the outerend thereof serves [as a means to swing the link-29. The link turned which swings the link 29and through the link 28 lowersthe work support. An

adjusting screw 32 is provided for adjusting the position of the bearingfor the link 29 and by means of this screw, the position of the forward end of the work support relative to thest itch finger and the needle maybe varied.

Having thus particularly described my in 'vention, what I claim as new and desire to secure by Letters Patent is 1. The combination of a work support, a crimping ridge carried thereby, an overhanging arm, means for supporting said work supportwhereby the same may be moved toward and from sai d overhangirig arm, stitch forming mechanism carried by the overhanging arm and including a needle -movable back and forth above said crimping hanging arm, stitch forming mechanism carried by said overhanging arm, a stitch finger supported by the overhanging arm, over which the stitches may be laid, and means whereby said stitch finger may .be adjusted laterally. s

3. The combination with a work support, of a crimping ridge carried thereby, an overhanging arm, stitch forming mechanism carried by said overhanging arm, a stitch finger yieldingly supported by said overhang.

ing arm over which the stitches may be formed, and means whereby said stitch finger maybe adjusted laterally.

I t 4. The combination of a work support, a crimping, ridge carried thereby, presser members coiiperating with said crimping ridge, an overhanging arm, stitch-forming mechanism carried by said overhanging;

arm, a bracket rigidly carried by the overhanging arm, and an edge guide carried by said bracket, said edge guide being disposed in front of the stitch mechanism and in line with the crimping ridge, and, held by said J bracket in longitudinally fixed position relative to said stitch-forming mechanism.

f 5; The combination of a work support, a crimping ridge carried thereby, presser members cooperating with said crimping ridge, a'n overhanging arm, stitch-forming mechanism carried by said overhanging arm,

a bracket rigidly carried bythe overhanging arm, an edge guide carried by said bracket,

said edge guide being disposed in front of the stitching mechanismand'in line with the crimping ridge, and held by'saidjbracket in longitudinally fixed positionrelative to said stitch-forming mechanism, and'a stitch fin:

ger carried by said bracket.

crimping ridge carried thereby, an over-.

16.'The combination of a worksupport, a 1

hanging arm, stitch forming n'iechanism'carried by said overhanging arm, an edge guide carried by said overhanging arm, a stitch finger carried by said overhanging arm, and means for adjusting the. stitch finger relative to said edge guide. a

7. The combination of a .work support, a crimping ridge carried thereby, an overhanging arm, stitch forming mechanism :carried by said overhanging arm, a bracket secured to said overhanging arm, an edge guide supported by said bracket, a stitch finger supported by said bracket, and means guide supported by said bracket a stitch finger supported by said bracket, means for yieldingly holding said stitch finger in contact with said crimping ridge, and means for adjusting said stitch finger relative to ,said edge guide.

9. The combination of a work support, a crimping ridge carried thereby, an ,overhanging arm, stitch forming mechanismcarried by the overhanging arm, a bracket rigidly attached to the overhanging arm and having spaced supporting bearings, a shaft mounted in said bearings and held from longitudinal movement therein, a stitch finger carried by said shaft, and a spring surrounding said shaft and operating to rotate the same to yieldingly press the stitch finger into contact with the crimping ridge. f

10. The combination with a work support, of a crimping ridge carried thereby, an overhanging arm, stitch forming mechanism carried by the overhanging arm, a bracket supported by the overhanging arm, a shaft mounted in said bracket, a stitch finger carried by said shaft, means for holding said stitch finger in yielding contact with the crimping ridge, and means whereby saidstitch finger may be adjusted laterally.

11. The combination of a work support, a crimping ridge carried thereby, an overhanging arm, stitch forming mechanism carried by the overhanging arm, a bracket supported by the overhanging arm, a shaft mounted in said bracket, a stitch finger carried by said shaft, means for holding. said stitch finger in yielding contact with the crimping ridge, means whereby said stitch finger may be adjusted laterally, and an edge guide carried by said shaft.

12. In a blind stitch sewing machine, a

needle entering and emerging from the same side of the fabric, an edge guide, said edge guide having an opening for the fabric fac mg opposite.to the direction in which the needle ent rs the fabric.

13. In a blind stitchsewing' machine, the

combination with a work'support, an overhanging arm, stitch forming mechanism carhaving a needle movable back and forth between the crimping ridge and the stitch finger, and said stitch finger having an enlargement in front of the path of the needle for holding down the edge of the fabric.

14. In a blind stitch sewing machine, the combination with a work support, an overhanging arm, stitch forming mechanism carried by said overhanging arm, a crimping ridge mounted on said Work support, a stitch finger supported by said overhanging arm and engaging the material above the crimping ridge, said stitch forming mechanism having a needle movable back and forth between the crimping ridge and the stitch finger, said stitch finger having an enlargement in front of the path of the needle for holding down the edge of the fabric, and an edge guide supported by said overhanging arm and located in front of the needle for guiding the edge of the material underneath the stitch finger.

15. The combination of a work support, a crimping ridge carried thereby, an overhanging arm, stitch forming mechanism carried by said overhanging arm, an edge guide carried by said overhanging arm, a stitch finger carried by said overhanging arm, said stitch finger having a thread guide, and means for adjusting the stitch finger relative to said edge guide.

16. The combination with a work support, of a crimping ridge carried thereby, an overhanging arm, stitch formingmechanism carried thereby, a stitch finger yieldingly supported by said overhanging arm and held against longitudinal movement, over which stitches may be formed, and a thread guide carried by said stitch finger.

17. The combination in a sewing machine a work support, means for crimping the fabric stitch forming'mechanism supported above said work support and including a needle entering and emerging from the same face of the fabric, a stitch finger and an edge guide, said edge guide being located in a horizontal plane below the stitch finger.

18. In a sewing -machine,'a work support having a crimping ridge, stitch-forming mechanism including a needle adapted to pass through the material bent over said crimping ridge, a stitch finger having anenneedle for holding down the edge of the material and means for supporting said stitch finger, whereby the same is held against longitudinal movement, and an edge guide,

said edge guide being located in a horizontal plane below the stitch finger.

19. In a sewing machine, a work support, an overhanging arm, a needle supported thereby, a member rigidly supported by said overhanging arm, a stitch finger carried by said member and a move vertically dapted to to and from said needle, and means where- 115 ;largement- 1n advance of the path of the V w by the. work support may be moved vertically to and from said needle.

20. In a sewing machme, a work support, an overhanging arm, a needle supported L. thereby, a member rigidly supported by by the work support may be moved vertisally to and. from said needle, and an edge guide supported by said member.

In testimony whereof I aflix my slgnature, in presence of two Witnesses.

LANSING ONDERDONK.

Witnesses:

R. S. OSWALD, W'ALTER HARTLEY. 

